Which cranial nerve provides sensation to the posterior third of the tongue?
tongue sensory nerves, dental hygiene exam prep

Which cranial nerve provides sensation to the posterior third of the tongue?

Which cranial nerve provides sensation to the posterior third of the tongue?

(A.) Fifth
(B.) Ninth
(C.) Eighth
(D.) Twelfth

tongue sensory nerves, dental hygiene exam prep

Answer: (B). Ninth

Glossopharyngeal is the ninth (IX) cranial nerve and provides sensation to the posterior 1/3 of the tongue and pharynx area.

Trigeminal is the fifth (V) cranial nerve and provides sensation to the anterior 2/3 of the tongue.

Vestibulocochlear is the eighth (VIII) cranial nerve and provides hearing and balance.

Hypoglossal is the twelfth (XII) cranial nerve which innervates the motor muscles of the tongue.

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Written by
Claire Jeong, RDH, MS
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